Underground signals carried through common mycelial networks warn neighbouring plants of aphid attack.

@article{Babikova2013UndergroundSC,
  title={Underground signals carried through common mycelial networks warn neighbouring plants of aphid attack.},
  author={Zdenka Babikova and Lucy Gilbert and Toby J. A. Bruce and Michael A Birkett and John C Caulfield and Christine M Woodcock and John Anthony Pickett and David Johnson},
  journal={Ecology letters},
  year={2013},
  volume={16 7},
  pages={835-43}
}
The roots of most land plants are colonised by mycorrhizal fungi that provide mineral nutrients in exchange for carbon. Here, we show that mycorrhizal mycelia can also act as a conduit for signalling between plants, acting as an early warning system for herbivore attack. Insect herbivory causes systemic changes in the production of plant volatiles, particularly methyl salicylate, making bean plants, Vicia faba, repellent to aphids but attractive to aphid enemies such as parasitoids. We… CONTINUE READING
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